Hose or cable release alert system

ABSTRACT

An alerting system for signaling the displacement of a leading end portion of a hose or the like, carried by a vehicle, includes a hose-gripping unit, a visible or audible signal generator, and a mounting box for connecting the gripping unit to support structure. Displacement of the hose from the gripping unit may generate an alarm signal to enable the operator to immediately bring the vehicle to a stop, or it may generate a signal simply to indicate when one of several hoses has been intentionally deployed.

CROSS REFERENCE TO RELATED APPLICATION

This application claims the benefit of U.S. provisional patentapplication No. 61/337,208, entitled “Hose/Cable Release Signal AlertSystem,” filed Feb. 1, 2010.

BACKGROUND OF THE INVENTION

The system of the present invention compliments the restraint devicesthat are currently used for the prevention of inadvertent displacement,from a vehicle, of a hose, cable, or other such long, flexible object.The system serves no significant restraining function, but insteadserves primarily to alert personnel that displacement of the restrainedobject has occurred; alternatively, or in addition, the system may serveto signal personnel as to which of several monitored objects has beenintentionally deployed.

The National Fire Protection Agency (NFPA) mandates, in 1901 Section15.10.7 of the apparatus standard, that a mechanism be used to securehoses, from the front, rear, and sides, to prevent inadvertentdisplacement from the beds in which they are stored on a fire truck. Thetarp covers, webbing, and other devices used for securing hoses do nothowever always suffice. Failure may be due to wear or inherent defectsin the restraining device; but it is believed that, more commonly,accidental release is a result of hasty or careless placement of therestraints provided, which can readily occur after use, particularlyunder urgent circumstances.

Similar concerns and problems are presented when hoses are transportedby other vehicles, such as oil-delivery and tree-spraying trucks, aswell as when vehicles such as utility trucks transport electrical andstructural cable and other such long, flexible objects.

There are numerous reports of property damage, and of severe personalinjury and even of death of bystanders, resulting from impact by a hoseand or cable trailing from a moving vehicle. Such accidents happenessentially because the operator of the vehicle has no way of knowingthat an inadvertent displacement has occurred, and the provision of asuitable monitoring and alerting system therefore represents a severe,unsatisfied need.

The system of the present invention adds a very substantial measure ofsafety under the circumstances described, by alerting the operator, orother personnel, that a hose, cable, or the like is no longer in itsproperly stored position. The invention obviates, or at least verysubstantially diminishes, the potential for injury due to the accidentalrelease of such objects from a moving truck or other vehicle.

A hose-laying vehicle that employs a mechanical connection between aloop of hose and a switch, for activating a warning device for apredetermined period, is disclosed in Riddell et al. U.S. Pat. No.4,730,180. The express, general object of the invention of that patentis however to alert the operator of the vehicle that substantially allof the hose to be laid has been discharged; thus, it neither teaches norsuggests the invention of the present application.

SUMMARY OF THE INVENTION

The broad objects of the present invention are to provide an alertingsystem for signaling that a hose, cable, or other long, flexible objecthas been displaced from its stored position on a vehicle; and to providea vehicle equipped with such a system.

More specific objects of the invention are to provide such an alertingsystem which is highly effective for its intended purposes, which may beof incomplex and durable construction and modest cost, which is readilyinstalled and utilized, and which is suited for a variety ofapplications.

It is also an object of the invention is to provide a vehicle forcarrying a hose, cable, or the like, wherein the risks of injury topersons and property due to the inadvertent release of the object iseliminated or is, at least, very substantially diminished, and whereinsignals indicating the status of a stored object can be generated.

It has now been found that certain of the foregoing and related objectsare attained by the provision of an alerting system for signaling thedisplacement of a leading end portion of a long, flexible object from astored position on a vehicle, including:

-   -   a mechanical gripping unit comprised of at least two gripping        members dimensioned and configured to cooperatively grip        therebetween, in direct surface contact, an end portion of a        long, flexible object; means mounting the gripping members for        movement between at least one first position, in which engaging        elements of the gripping members are proximate one another, and        at least one second position in which the engaging elements are        remote from one another; and means for biasing the gripping        members toward the at least one first position;    -   signaling means operatively connected for activation to produce        an alert signal in response to displacement of the gripping        members of the gripping unit from the at least one second        position to the at least one first position; and    -   attaching means operatively connected to the gripping unit for        effectively connecting the gripping unit to support structure.

-   The gripping members of the gripping unit employed in the system    will usually comprise arms having outer end portions on which the    engaging elements are effectively disposed. Such engaging elements    will advantageously be electrically conductive, with the signaling    means of the system comprising an electrical circuit which is    completed for activation, to produce an alert signal, by effective    contact of the engaging elements with one another in the at least    one first position. The signaling means employed in such a system    will additionally comprise an electrically operated signaling device    located remotely from the gripping unit.

In certain preferred embodiments, the gripping unit of the system willfurther comprise a housing for containment of the gripping members andhaving an aperture through which the gripping members may at leastpartially extend. More specifically, the gripping members will desirablybe mounted for movement between an extended position, in which theyextend through the aperture of the housing to an extent that is at leastsufficient for gripping of the long, flexible object, and a retractedposition in which they are either contained fully within the housing orthey protrude from the housing to an extent that is substantially lessthan in their extended position. In such embodiments, biasing means willnormally be provided for urging the gripping members toward theirretracted position.

The housing of the gripping unit will advantageously be of elongate,generally tubular construction, with an open end that provides theaperture through which the gripping members extend. It will desirably beconstructed, at least in part, from a material that is resilientlydeformable when subjected to manually applied force, and it may beespecially desirable to fabricate the housing, at least in a regionsurrounding the open end, from a low-friction material, which may be inthe form of a rigid collar.

Other objects of the invention are attained by the provision of avehicle for carrying a long, flexible object in a stored position,comprising at least one structure on the vehicle providing means forstoring the object, and for proximately attaching a gripping unit; along, flexible object stored by the at least one structure and having aleading end portion accessible for initiating deployment; and analerting system including a gripping unit, signaling means, andattaching means constructed, connected, and attached as hereindescribed.

In preferred embodiments the vehicle will be a fire truck, and the long,flexible object will be a hose. At least one structure on the fire truckwill define a bed in which the hose will usually be stacked with itsleading end portion typically disposed at or near the top. In mostinstances the bed-defining structure will comprise a plurality ofgenerally vertical walls, to which the gripping unit-attaching means ofthe alerting system may be secured.

The signaling means will usually comprise an electrical circuit and asignaling device, the latter normally being located in thetruck-operator's cabin and functioning to produce an alarm signal whenactivated. Alternatively (or additionally), signaling devices may belocated on a pump panel to indicate which of several hoses has beendeployed and/or charged. Elements of the gripping members(advantageously, the engaging elements) may be electrically conductive,such that the electrical circuit is completed, for activation to producean alert signal, by effective contact of those elements with one anotherin, or when moving toward, the at least one first position of thegripping members. The signaling device will most desirably produce avisible signal when activated to produce an alarm.

Rather than comprising a storage bed, the “at least one structure” on avehicle embodying the invention may comprise a rotatable, effectivelycylindrical structure on which the long, flexible object is coiled witha leading end portion disposed outermost. In such embodiments theattaching means of the system will be secured to fixed structure towhich the cylindrical structure is proximate.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side elevational view of a fire truck embodying the presentinvention, on which the alerting system of the invention is installed;

FIG. 2 is a plan view of the fire truck of FIG. 1;

FIG. 3 is a side elevational view of an oil-delivery truck embodying theinvention, on which the present alerting system is installed;

FIG. 4 is a side elevational view of a utility truck embodying theinvention on which the present alerting system is installed;

FIG. 5 is a diagrammatic illustration of an alerting system embodyingthe invention, installed in association with a hose stored as a verticalstack of layers in a fragmentarily illustrated hose bed;

FIG. 6 is a diagrammatic illustration of an alerting system embodyingthe invention, installed in association with a coiled hose; and

FIG. 7 is a fragmentary, diagrammatic illustration of components of analerting system embodying the invention, including a gripping unitcomprised of a tongs-like device gripping the end portion of a hosedisposed in the uppermost “flake”or layer of a stack.

DETAILED DESCRIPTION OF THE PREFERRED AND ILLUSTRATED EMBODIMENTS

Turning initially to FIGS. 1 and 2 of the drawings, therein illustratedis a fire truck embodying the present invention and including a body,generally designated by the numeral 10, and a cab generally designatedby the numeral 12. Transverse and longitudinal beds 14, 14′,respectively, are defined in the body of the truck by upstanding,normally vertical walls 16, 16′ and vertical body panel portions 15,15′. Stacked hoses 18, 18′ are arranged in layers, with flakes lying oneupon the other, between the walls and panels defining each of the beds14, 14′.

In addition to the anchor or mounting boxes 20 that are secured to thevertical walls 16, 16′ defining the beds 14, 14′, the mounting boxes 20that are associated with the longitudinal beds 14″ are attached to anadjacent end panel 28 of the truck body 10. Each mounting box 20 isconnected by a tether 22 to a mechanical gripping unit, generallydesignated by the numeral 24. A signaling device 25, for producing analarm signal, is mounted within the cabin 26 of the cab 12 and isoperatively connected to receive signals from all of the mounting boxes20 (by means not shown, but hereinafter described). The mounting boxes20 are also operatively connected (by means also not shown) to the pumppanel 21, which includes signal lights and gauges to indicate the status(e.g., of charging or deployment) of each hose, thereby avoiding theneed for the pumper driver to make a direct, visual check.

FIG. 3 illustrates an oil-delivery truck, and FIG. 4 illustrates autility truck, both embodying the present invention. The oil-deliverytruck includes a body, generally designated by the numeral 30, comprisedof a chassis 40 on which is supported an oil tank 41. It also includes acab, generally designated by the numeral 32, in the cabin 26 of which ismounted an alert signal device 25.

A length of hose 34 is wound upon a spool or reel 36, or othereffectively cylindrical take-up and payout structure, rotatably mountedby supporting structure 38 affixed to the chassis 40 of the truck body30. Here again a tether 22 is fastened at one end to a gripping member24 which is, in turn, attached to the free end portion of the hose 34;the opposite end of the tether 22 is fastened to a mounting box 20,secured to the support structure 38. The gripping member 24 isoperatively connected (by means not shown), for generating an electricalsignal, for activating the alert signal device 25, when it isdisconnected from the hose 34.

In similar fashion a reel or spool 50 is rotatably mounted on structureat the rear of the utility truck body, generally designated by thenumeral 46, and supports a roll of cable, generally designated by thenumeral 51. A gripping member 24 is attached to the free end portion ofthe cable 48, and is tethered, by element 22, to a mounting box 20secured to the chassis 53; here again, signal-generating means (notshown) is incorporated.

FIGS. 5 and 6 diagrammatically illustrate the system of the inventionutilized to monitor hoses 18 and 34 in stacked and rolled form in thebed 16 and on the reel 36, respectively. The dash line “C” in FIG. 5shows a circuit electrically connecting the gripping member 24 on thetop flake of hose 18 to an anchor box 20, and connecting the box 20 toan alert signal device 25. Needless to say, release of the hose 18causes the gripping member 24 to effect closing of the circuit “C,” andthereby to activate device 25. Similarly, release of the hose 34 fromthe gripping device 24 in FIG. 6 effects closing of the circuit “C,” tothe same effect.

Turning now in detail to FIG. 7 of the drawings, therein illustrated isa gripping unit, generally designated by the numeral 24, which isrepresentative of means that is suitable for use in the present systemfor establishing a releasable attachment to the end portion of a long,continuous object, and for initiating a release-alert signal inaccordance herewith. The unit 24 comprises a pair of tongs or pincers,generally designated by the numeral 52, consisting of arms or jaws 54pivotably connected to one another by a pin or axle 56. Two coil springs57 are mounted between handle portions 58 of the arms 54, and serve tobias the arms to a closed position in which engaging elements 70, at theends of the gripping portions of the arms 54 defined outwardly of thepivot element 56, are in contact with one another.

The mounting or anchor box 20 includes a plate 60 by which it isfastened to the vertical wall 16 using, for example, screws 62. One endof a length of tethering cable 22 is attached to the pivot pin or axle56 that couples the arms 54 of the tongs assembly 52 to one another,with the opposite end of the cable being affixed to the plate 60 of themounting box 20. The tethering cable 22 incorporates a coil springelement 64, which serves to exert an inward force to bias the tongsassembly 52 toward the mounting box 20.

Also joined effectively to the plate 60 is a generally cylindrical,resiliently deformable housing or sleeve 66 (shown in cross section),which is formed with a series of circumferential pleats 67 along itslength to facilitate longitudinal extension and compression. The housing66 will typically be made from a tough and durable elastomeric material,or from a tough and durable fabric (such as woven nylon) containing animbedded coil spring (not illustrated) for urging the housing toward anextended configuration. In the illustrated embodiment the housing isalso radially compressible, at least in the section indicated by theopposing arrows in FIG. 7, so as to allow transmission of manual forceto the handle portions 58 of the arms 54 and thereby to cause theirouter end portions to extend from the housing 66 and to assume an openposition for receiving the hose therebetween. In some instances, thehousing 66 may be compressed longitudinally, to expose the arms 54 forgripping a hose, with reliance being placed upon the natural tendency ofthe housing to resume a normal, extended position so as to enclose thearms 54 when the hose is released (i.e., obviating, or supplementing,the use of, for example, the coil spring section 64 to effectretraction).

A collar or ring 68 (fragmentarily illustrated), normally formed from ahard, low-friction plastic material (e.g., nylon or TEFLON), is providedat the forward end of the sleeve 66, surrounding its open end 69. Thecollar 68 serves to keep the forward end of the sleeve open, andfacilitates retraction of the arms 54. It also ensures uninhibitedmovement of the hose past the gripping unit, as is most important forensuring rapid and trouble-free deployment. Although not illustrated,the housing 66 may alternatively be constructed to exert a closing forceon the clamping arms 54; for example, in place of any rigid collar orring, a garter spring may encircle its open end 69. Also, the entirehousing may be made from a low-friction material to minimize anyinhibition to movement of the gripping members therein or of themonitored object thereby.

The free, forward end portions of the gripping arms 54 are provided withpads or elements 70, which serve not only to engage and grip the hose indirect surface contact but also to function as sensor plates foractivation of the alert system. In the embodiment illustrated, the pads70 are electrically conductive and constitute electrical contacts orelectrodes, which are connected, through wires 72, to an appropriateelectrical component (e.g., a solenoid, not shown) contained within themounting box 20.

In its normal, operative relationships depicted in FIG. 7, the alertsystem is armed to initiate a signal upon displacement of the hose frombetween the engagement pads 70, which otherwise bear upon the oppositesides of the top hose flake 18″ and grip it therebetween. It will beevident that, upon displacement of the flake 18″ the coil springs 57will force the outer end portions of the arms 54 to a closed position,causing the engagement elements 70 to contact one another directly. Thiswill in turn close the circuit provided, via the wires 72, and willthereby activate the signaling device 25 to generate a signal and thusalert personnel that the end portion of the hose flake has beendisplaced from its safely stored position.

It should be appreciated that the means by which a closed (or closing)condition of the arms can be detected can take any appropriate form, aswill be evident to those skilled in the art. For example, cooperatingelectrical contacts can be provided at any suitable position along thelengths of the arms, and they might be so constructed and disposed as tocomplete the electric circuit well ahead of the time the engagementelements 70 actually contact one another; indeed, movement of thegripping arms may function to open a circuit in a suitable actuatingarrangement. Motion detectors, optical sensors, and the like, disposedat any effective location (e.g., on the arms 54 or within the housing66), might for example also serve to generate a signal that isindicative of the absence of the gripped object.

Many other variations can of course be made in the system of theinvention without departure from the scope of the appended claims. Forexample, any suitable signaling device, be it visual, audible, or both,and any suitable transmitting system for initiating the alert signal, beit hard-wired or wireless, analog or digital, may be employed. Thesignaling unit may be located at any appropriate position on thevehicle, albeit in most instances it will be mounted within the driver'scabin so as to enable his immediate reaction to stop the vehicle inresponse to an alarm signal; as discussed above, however, signalsproduced at a pump panel may also provide crucial information.

The particular form of the gripping unit employed will depend, to anextent, upon whether the object being monitored is a hose, a cable, orother monitored object, but it should satisfy most, if not all, of thefollowing criteria: Perhaps most importantly, the gripping members mustbe readily attached to the monitored object, not only under calmcircumstances but also under urgent conditions that require a fast andefficient response, such as to prepare, in haste, for departure from alocation of use. Convenience and facility of attachment are alsoimportant due to the fact that the leading end portion of, for example,a fire hose may not be readily accessible and may, indeed, be buried ina stack and/or wedged in a tight bed. The gripping unit should not beeasily lost or disconnected from the vehicle, to ensure its ongoingavailability, and it should be sufficiently strong and durable tosurvive rough handling throughout an extended period of use.

The gripping unit and components should be as unobtrusive as possible,and should function by gripping the monitored object directly, withoutneed for any cooperating part attached to the object itself. In additionto requiring alignment to enable coupling with the gripping members,such an added part could inhibit deployment, such as by becomingsnarled. Moreover, fire fighters depend upon features of the hosesections (e.g., male and female connectors) to guide escape from aconflagration (often under pitch-black conditions), and added componentscould create confusion and critical misdirection.

While the mounting or anchoring unit may take any suitable form, it mustalso be so constructed as to avoid interference with the free and rapiddeployment of a fire hose (or other object). Proper placement of themounting box is also crucial; if, for example, the arrangement is suchthat the gripping mechanism will be elevated above the hose in itsreleased position, and/or that it will freely dangle from an end panelof the truck body (rather than being located directly over a hose bed),the possibility of interference will be substantially reduced.

Retraction of the gripping members can be effected in any suitable way.As a further example, rather than (or in addition to) relying upon aspring element integrated into the tether and/or the longitudinalresilient compression and extension of a housing, one end of the tether,connecting strip, strap, or the like may be wound upon a spool, withtake-up being powered by a spring motor or an electric motor. Actuationof the motor could be initialed in reaction to withdrawing force exertedupon the monitored object, or by the same signal that activates thealerting device.

Finally, it will be appreciated that the system of the invention may beincorporated during vehicle manufacture or it may be designed forretrofitting to equip existing vehicles, as would be highly desirablegiven the present critical need. Needless to say, however, circuitry andother features of the system may, as a practical matter, requireintegration into the body and/or cab of a vehicle, thus makingafter-market applications unfeasible.

Thus, it can be seen that the present invention provides a novelalerting system for signaling that a hose, cable, or other long,flexible object has been inadvertently displaced from its storedposition on a vehicle, and it provides a vehicle equipped with such asystem. The alerting system is highly effective for its intendedpurposes, it may be of incomplex and durable construction and modestcost, it is readily installed and utilized, and it is suited for avariety of applications; valuable signals, indicative of the status ofhoses and the like, can be generated by the system as well. Theinvention also provides a vehicle for carrying a hose, cable, or thelike, wherein the risk of injury to persons and property, due to theinadvertent release of a length of the object, is eliminated or is, atleast, very substantially decreased, and wherein signals indicating thestatus of a stored object may be generated as well.

1. An alerting system for signaling the displacement of a leading endportion of a long, flexible object from a stored position on a vehicle,comprising: a mechanical gripping unit comprised of at least twogripping members dimensioned and configured to cooperatively griptherebetween, in direct surface contact, an end portion of a long,flexible object; means mounting said gripping members for movementbetween at least one first position, in which engaging elements of saidgripping members are proximate one another, and at least one secondposition in which said engaging elements are remote from one another;means for biasing said gripping members toward said at least one firstposition; and a housing for containment of said gripping members andhaving an aperture through which said gripping members may at leastpartially extend, said gripping members being mounted for movementbetween an extended position, with said gripping members extendingthrough said aperture of said housing to an extent that is at leastsufficient for gripping of the long, flexible object, and a retractedposition with said gripping members contained either fully within saidhousing or protruding from said housing to an extent that issubstantially less than in said extended position; signaling meansoperatively connected for activation to produce an alert signal inresponse to displacement of said gripping members of said gripping unitfrom said at least one second position to said at least one firstposition; and attaching means operatively connected to said grippingunit for effectively connecting said gripping unit to support structure.2. An alerting system for signaling the displacement of a leading endportion of a long, flexible object from a stored position on a vehicle,comprising: a mechanical gripping unit comprised of at least twogripping members dimensioned and configured to cooperatively griptherebetween, in direct surface contact, an end portion of a long,flexible object; means mounting said gripping members for movementbetween at least one first position, in which engaging elements of saidgripping members are proximate one another, and at least one secondposition in which said engaging elements are remote from one another;means for biasing said gripping members toward said at least one firstposition; and signaling means operatively connected for activation toproduce an alert signal in response to displacement of said grippingmembers of said gripping unit from said at least one second position tosaid at least one first position; and attaching means operativelyconnected to said gripping unit for effectively connecting said grippingunit to support structure.
 3. The system of claim 2 wherein saidgripping members comprise arms.
 4. The system of claim 3 wherein saidmeans for biasing comprises at least one spring.
 5. The system of claim3 wherein said engaging elements are disposed on outer end portions ofsaid arms.
 6. The system of claim 2 wherein said engaging elements areelectrically conductive, and wherein said signaling means comprises anelectrical circuit which is completed for activation to produce an alertsignal by effective contact of said engaging elements with one anotherin said at least one first position.
 7. The system of claim 6 whereinsaid signaling means further comprises an electrically operatedsignaling device located remotely from said gripping unit.
 8. The systemof claim 2 wherein said gripping unit further comprises a housing forcontainment of said gripping members and having an aperture throughwhich said gripping members may at least partially extend.
 9. The systemof claim 8 wherein said gripping members are mounted for movementbetween an extended position, with said gripping members extendingthrough said aperture of said housing to an extent that is at leastsufficient for gripping of the long, flexible object, and a retractedposition with said gripping members contained either fully within saidhousing or protruding from said housing to an extent that issubstantially less than in said extended position.
 10. The system ofclaim 9 wherein biasing means is provided for urging said grippingmembers toward said retracted position thereof.
 11. The system of claim8 wherein said housing is of elongate, generally tubular constructionand has an open end providing said aperture.
 12. The system of claim 11wherein said housing is constructed, at least in part, from a materialthat is resiliently deformable when subjected to manually applied force.13. The system of claim 11 wherein said housing is comprised of alow-friction material, at least in a region surrounding said open end.14. The system of claim 13 wherein said housing further includes a rigidcollar, which provides the low friction material in said surroundingregion. 15.-26. (canceled)